Is the number an absolute intelligible reality? The author investigates the number and its nature in Plotinus. works trying to solve the following question: what number is considered intelligible - the number in general or the number in particular? Three answers are given over this study. Thus, if the number is generally defined as intelligible , than the number in general is an intelligible reality . On the other hand, if we make a distinction between numbers and number , it seems that, for Plotinus, only the particular number could be considered clearly intelligible, while the number as a generic reality is not so. Actually, the final solution comes out from the agreement between these two divergent theses. This agreement is based on the idea of the total number: a number that is in the same time particular and general, a number which is the object of the final part of the present study